Satoshi Miyawaki, author
Graduate School of Language and Culture, Osaka University, 2018
Artikel Jurnal
editors, Andy Kirkpatrick, Roland Sussex
Springer, 2012
eBooks
Sambrook, G.A., author
Longmans, Green, 1947
Buku Teks
London Collier-Macmillan 1965,
Buku Teks
Parrot, Martin, author
Cambridge University Press, 2003
Buku Teks